Results 131 to 140 of about 522,020 (249)

Holocene vegetation change and fire–plant diversity shifts in Mediterranean France

Journal of Quaternary Science, EarlyView.
ABSTRACT Changes in fire activity are recognized as a major threat to biodiversity and vegetation communities across the Mediterranean Basin. However, long‐term fire–vegetation interactions remain poorly investigated. Here, we combine a high‐resolution charcoal record with pollen data from the “Étang des Aulnes” lake (southern France) to reconstruct ...
Cécile Latapy, Marion Lestienne, Andy Hennebelle, Johanne Burmeister, Aymeric LeGall, Gwendal Mouden, Damien Rius, Lisa Bajolle, Jacques‐Louis de Beaulieu, Walter Finsinger, Emmanuel Gandouin, François Demory, Cécile H. Albert, Bérangère Leys   +13 more
wiley   +1 more source

Deep Learning-Based Gravity Inversion Integrating Physical Equations and Multiple Constraints

Applied Sciences
Three-dimensional gravity inversion technology involves inferring the underground density structure based on observed gravity anomaly data. In addition to gravity inversion based on physics-driven methods, deep learning, as a purely data-driven technique,
Wenxuan Shi, Jiapei Wang, Chongyang Shen, Shuai Zhang, Minghui Zhang, Hongbo Tan, Guangliang Yang   +6 more
doaj   +1 more source

Performance Analysis of Integrated Inertial Navigation System Using Gravity Anomaly

, 2010
To overcome accumulated error of INS in non-GNSS environment, we propose EKF based integrated INS architecture, which can estimate INS position error, using gravity anomaly data.
박찬국, 유영민
core  

Gravity Anomaly And Topography Induced By Repeated Fault Motions [PDF]

, 1997
The Accumulation Hypothesis deals with the origin of the gravity anomaly and topography around an active fault. This hypothesis was postulated that the gravity anomaly around active faults is the product of repeated fault motions; higher gravity anomaly ...
Syed Ilias, Syed Hashim, Wan Mohd Akib, Wan Abdul Aziz   +1 more
core  

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

Journal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine, Joost Frieling, Bernd Wagner, Martin Melles, Volker Wennrich, Tamsin A. Mather, Stuart A. Robinson, David M. Pyle   +7 more
wiley   +1 more source

A Study on the Distribution Characteristics of Salinity and Nutrients and the Migration Mechanism of Soil Salt in the Delingha Saline‐Alkali Soil Profile of the Qaidam Basin

Land Degradation &Development, EarlyView.
ABSTRACT Soil salinization negatively impacts the economic development and ecological environment, particularly in the arid and semiarid regions of China. The Qaidam Basin constitutes a major distribution area of saline‐alkali land in the country. However, the distribution patterns of salinity and nutrients within soil profiles and the underlying salt ...
Hongpan Xue, Chenyu Wang, Yiyan Chen, Binkai Li, Aiyin Cheng, Hongyu Li, Bo Dong, Xiuyun Min, Haicheng Wei   +8 more
wiley   +1 more source

Ecological Challenges and Strategic Responses to China's Quantitative Rigidity of Cultivated Land Protection

Land Degradation &Development, EarlyView.
ABSTRACT Balancing food security and ecological sustainability has become a critical challenge for land governance in rapidly urbanizing countries. China has successfully maintained national cultivated land quantity through a comprehensive farmland protection regime.
Yuzhe Wu, Zhuofan Li, Xinyan Shen
wiley   +1 more source

Dynamic Performance Enhancement of a High‐Agility Hypersonic Mechanical System via a Learning‐Augmented Robust Control Architecture

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori, Seyed Hossein Sadati   +1 more
wiley   +1 more source

Effect of video‐based game therapy on activation of scapular muscles in children with thoracic hyperkyphosis

PM&R, EarlyView.
Abstract Background Game‐based rehabilitation has been shown to support motor control and muscle activation in children; therefore, video‐based gaming may represent a promising rehabilitation approach for targeting scapular muscles. Objective To examine the effects of video‐based game therapy on scapular muscle activation, strength, and upper extremity
Kubra Kardes, Ayse Zengin Alpozgen, Turgut Akgul   +2 more
wiley   +1 more source

Why gravity is not an entropic force [PDF]

, 2010
The remarkable connections between gravity and thermodynamics seem to imply that gravity is not fundamental but emergent, and in particular, as Verlinde suggested, gravity is probably an entropic force.
Gao, Shan, Shan, Gao
core